{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-65981", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-23T18:54:15.832Z", "datePublished": "2026-07-31T21:00:02.893Z", "dateUpdated": "2026-07-31T21:00:02.893Z"}, "containers": {"cna": {"title": "Coturn: MOBILITY-TICKET session-resume authorization bypass allows cross-user TURN allocation takeover", "problemTypes": [{"descriptions": [{"cweId": "CWE-639", "lang": "en", "description": "CWE-639: Authorization Bypass Through User-Controlled Key", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/coturn/coturn/security/advisories/GHSA-69wx-x7x6-pjj8", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/coturn/coturn/security/advisories/GHSA-69wx-x7x6-pjj8"}, {"name": "https://github.com/coturn/coturn/commit/37df0513168f830a7c9ce0a411db0300fa182f05", "tags": ["x_refsource_MISC"], "url": "https://github.com/coturn/coturn/commit/37df0513168f830a7c9ce0a411db0300fa182f05"}], "affected": [{"vendor": "coturn", "product": "coturn", "versions": [{"version": "< 4.15.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-31T21:00:02.893Z"}, "descriptions": [{"lang": "en", "value": "Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, a server using --mobility authenticates a resumed REFRESH request with the resuming user's credentials but does not verify that identity against the original allocation owner, allowing an authenticated attacker who obtains a victim MOBILITY-TICKET to receive and inject relayed traffic and consume the victim's quota. In the handle_turn_refresh resume branch, the victim allocation (orig_ss) is located solely by the attacker-controlled mobile id, and credentials are only adopted (via copy_auth_parameters) when the resuming session is unauthenticated. Because the attacker's session already has hmackey_set set to 1 from its own prior authentication (which is never reset for long-term-credential sessions), the credential copy is skipped and check_stun_auth validates the REFRESH against the attacker's own identity rather than the allocation owner's. This issue is fixed in version 4.15.0."}], "source": {"advisory": "GHSA-69wx-x7x6-pjj8", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.15.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "coturn", "source": "cna", "vendor": "coturn"}, "product": "coturn", "vendor": "coturn"}], "created": "2026-07-31T22:30:17.915018+00:00", "updated": "2026-07-31T22:30:17.915054+00:00", "vendors": ["coturn", "coturn$PRODUCT$coturn"]}